Finding the Fourth Proportional to 782,245.08, 1,078,941.06 and 717,921.63
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Solution
The fourth proportional to 782,245.08, 1,078,941.06 and 717,921.63 is: 990,220.51
Step by Step Solution
- Step 1: Write the proportion equation
782,245.08 : 1,078,941.06 = 717,921.63 : x - Step 2: Convert to fraction form
782,245.08/1,078,941.06 = 717,921.63/x - Step 3: Cross multiply
782,245.08x = 1,078,941.06 × 717,921.63 - Step 4: Simplify right side
782,245.08x = 774,595,124,469.13 - Step 5: Solve for x
x = 774,595,124,469.13/782,245.08 - Step 6: Final answer
x = 990,220.51
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.